Magnetic properties of MnSb inclusions formed in GaSb matrix directly during molecular beam epitaxial growth
Krystyna Lawniczak-Jablonska , Anna Wolska , Marcin T. Klepka , Slawomir Kret , Jacek Gosk , Andrzej Twardowski , Dariusz Wasik , Adam Kwiatkowski , Boguslawa Kurowska , Bogdan J. Kowalski , Janusz Sadowski
AbstractDespite of intensive search for the proper semiconductor base materials for spintronic devices working at room temperature no appropriate material based on ferromagnetic semiconductors has been found so far. We demonstrate that the phase segregated system with MnSb hexagonal inclusions inside the GaSb matrix, formed directly during the molecular beam epitaxial growth reveals the ferromagnetic properties at room temperature and is a good candidate for exploitation in spintronics. Furthermore, the MnSb inclusions with only one crystalline structure were identified in this GaMn:MnSb granular material. The SQUID magnetometry confirmed that this material exhibits ferromagnetic like behavior starting from helium up to room temperature. Moreover, the magnetic anisotropy was found which was present also at room temperature, and it was proved that by choosing a proper substrate it is possible to control the direction of easy axis of inclusions \#x2019; magnetization moment between in-plane and out-of-plane; the latter is important in view of potential applications in spintronic devices.
|Journal series||Journal of Applied Physics, ISSN 0021-8979|
|Keywords in English||antimony alloys, gallium alloys, inclusions, magnetic anisotropy, magnetic transitions, magnetoelectronics, manganese alloys, molecular beam epitaxial growth, semimagnetic semiconductors, SQUID magnetometers|
|Publication indicators||: 2011 = 2.168 (2) - 2011=2.169 (5)|
|Citation count*||7 (2015-04-09)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.